/Engine/Source/Editor/UnrealEd/Public/EditorViewportClient.h
Legacy adapter for a toolkit to take ownership of a mode manager that may have been created by this viewport client
void TakeOwnershipOfModeManager ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FEditorModeTools](API\Editor\UnrealEd\FEditorModeTools) > & ModeManagerPtr )